Late Dorsal Tilt Angulation of Distal Articular Surface of Radius in Colles’ Type of Fracture at the End of the Immobilization, Can It Be Predicted?
*Department of Orthopaedic Surgery, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand
Affiliation : Sukrom Cheecharern MD*
Background : The objective was to predict the late dorsal tilt angulation of distal articular surface of radius in Colles’ type of
fracture with radioulna index difference, age, sex of the patient and dorsal cortex comminution.
Material and Method: Correlation between previously mentioned factors and the changing degree of dorsal tilt angulation
of distal articular surface of radius were analyzed. Sixty three wrist radiographs of sixty two patients with Colles’ type of
fracture were evaluated for dorsal tilt angulation of distal articular surface, radioulna index before and after reduction and
at the end of the immobilization, dorsal cortex comminution after reduction. The interobserver and intraobserver generalizability
coefficients of the dorsal cortex comminution measurement method were analyzed.
Results : Dorsal cortex comminution, age and sex of the patient were the predictors of the dorsal tilt angulation of distal
articular surface of Colles’ type of fracture at the end of the immobilization. Partial correlation coefficient for dorsal cortex
comminution, age and sex were 0.177, 0.201 and -8.206 respectively. The generalizability coefficients were rated as substantial
to excellent.
Conclusion : The late dorsal tilt angulation of distal articular surface of radius at the end of the immobilization can be
predicted from size of dorsal cortex comminution, age and sex of the patients.
Keywords : Colles’s fracture, Dorsal cortex comminution, Multiple regression
